L'indirizzo IP 157.81.23 è fornito da The University of Tokyo, che è di proprietà del CIDR (Classless Inter-Domain Routing) 157.82.0.0/16, IP tra 157.82.0.0 a 157.82.255.255 ). Il numero di sistema autonomo (ASN) è 2501.
| ASN | 2501 |
| IP inizia con | 157.82.0.0 |
| IP finale con | 157.82.255.255 |
| ASN Nome | The University of Tokyo |
| CDIR | 157.82.0.0/16 |
| IP numerico | |
| Registe | apnic |
| Ultimo aggiornamento | 25/05/2020 |

| Codice paese | Paese | Regione | Città | Latitude | Longitude | Ultimo aggiornamento | |
| IP2Location | JP | Japan | - | Higashimurayama | 35,75 | 139,467 | 2020-05-25 |
| MaxMind | JP | Japan | - | Tokyo | 35,6427 | 139,7677 | 2020-05-25 |
| Whois | JP | - | - | - | 138 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 157.81.23.0 | 2639337216 | 0 |
| 157.81.23.1 | 2639337217 | 0 |
| 157.81.23.2 | 2639337218 | 0 |
| 157.81.23.3 | 2639337219 | 0 |
| 157.81.23.4 | 2639337220 | 0 |
| 157.81.23.5 | 2639337221 | 0 |
| 157.81.23.6 | 2639337222 | 0 |
| 157.81.23.7 | 2639337223 | 0 |
| 157.81.23.8 | 2639337224 | 0 |
| 157.81.23.9 | 2639337225 | 0 |
| 157.81.23.10 | 2639337226 | 0 |
| 157.81.23.11 | 2639337227 | 0 |
| 157.81.23.12 | 2639337228 | 0 |
| 157.81.23.13 | 2639337229 | 0 |
| 157.81.23.14 | 2639337230 | 0 |
| 157.81.23.15 | 2639337231 | 0 |
| 157.81.23.16 | 2639337232 | 0 |
| 157.81.23.17 | 2639337233 | 0 |
| 157.81.23.18 | 2639337234 | 0 |
| 157.81.23.19 | 2639337235 | 0 |
| 157.81.23.20 | 2639337236 | 0 |
| 157.81.23.21 | 2639337237 | 0 |
| 157.81.23.22 | 2639337238 | 0 |
| 157.81.23.23 | 2639337239 | 0 |
| 157.81.23.24 | 2639337240 | 0 |
| 157.81.23.25 | 2639337241 | 0 |
| 157.81.23.26 | 2639337242 | 0 |
| 157.81.23.27 | 2639337243 | 0 |
| 157.81.23.28 | 2639337244 | 0 |
| 157.81.23.29 | 2639337245 | 0 |
| 157.81.23.30 | 2639337246 | 0 |
| 157.81.23.31 | 2639337247 | 0 |
| 157.81.23.32 | 2639337248 | 0 |
| 157.81.23.33 | 2639337249 | 0 |
| 157.81.23.34 | 2639337250 | 0 |
| 157.81.23.35 | 2639337251 | 0 |
| 157.81.23.36 | 2639337252 | 0 |
| 157.81.23.37 | 2639337253 | 0 |
| 157.81.23.38 | 2639337254 | 0 |
| 157.81.23.39 | 2639337255 | 0 |
| 157.81.23.40 | 2639337256 | 0 |
| 157.81.23.41 | 2639337257 | 0 |
| 157.81.23.42 | 2639337258 | 0 |
| 157.81.23.43 | 2639337259 | 0 |
| 157.81.23.44 | 2639337260 | 0 |
| 157.81.23.45 | 2639337261 | 0 |
| 157.81.23.46 | 2639337262 | 0 |
| 157.81.23.47 | 2639337263 | 0 |
| 157.81.23.48 | 2639337264 | 0 |
| 157.81.23.49 | 2639337265 | 0 |
| 157.81.23.50 | 2639337266 | 0 |
| 157.81.23.51 | 2639337267 | 0 |
| 157.81.23.52 | 2639337268 | 0 |
| 157.81.23.53 | 2639337269 | 0 |
| 157.81.23.54 | 2639337270 | 0 |
| 157.81.23.55 | 2639337271 | 0 |
| 157.81.23.56 | 2639337272 | 0 |
| 157.81.23.57 | 2639337273 | 0 |
| 157.81.23.58 | 2639337274 | 0 |
| 157.81.23.59 | 2639337275 | 0 |
| 157.81.23.60 | 2639337276 | 0 |
| 157.81.23.61 | 2639337277 | 0 |
| 157.81.23.62 | 2639337278 | 0 |
| 157.81.23.63 | 2639337279 | 0 |
| 157.81.23.64 | 2639337280 | 0 |
| 157.81.23.65 | 2639337281 | 0 |
| 157.81.23.66 | 2639337282 | 0 |
| 157.81.23.67 | 2639337283 | 0 |
| 157.81.23.68 | 2639337284 | 0 |
| 157.81.23.69 | 2639337285 | 0 |
| 157.81.23.70 | 2639337286 | 0 |
| 157.81.23.71 | 2639337287 | 0 |
| 157.81.23.72 | 2639337288 | 0 |
| 157.81.23.73 | 2639337289 | 0 |
| 157.81.23.74 | 2639337290 | 0 |
| 157.81.23.75 | 2639337291 | 0 |
| 157.81.23.76 | 2639337292 | 0 |
| 157.81.23.77 | 2639337293 | 0 |
| 157.81.23.78 | 2639337294 | 0 |
| 157.81.23.79 | 2639337295 | 0 |
| 157.81.23.80 | 2639337296 | 0 |
| 157.81.23.81 | 2639337297 | 0 |
| 157.81.23.82 | 2639337298 | 0 |
| 157.81.23.83 | 2639337299 | 0 |
| 157.81.23.84 | 2639337300 | 0 |
| 157.81.23.85 | 2639337301 | 0 |